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Henry David Thoreau was also a pencil maker and major improver. He could pick up a random handful of pencils and tell you exactly how many were in that bundle.
Bringing It All Together
Metalworking Tools and Materials
You might want to stiffen it with some wooden slats glued onto the backside.
Newer 'inverter ' based transformers aren't as easy to use. Older heavy weight ones are the thing to get.
For a 1000 W transformer I'd estimate easily a few hundred amps. (Hard to be precise with knowing the turns ratio.)